- Some stock photographs may show options that are not included. Please check product description.
Cupped Serrated Washer — 3/8 in.
- Mfg.#
- 1187
- Sku#
- 5808753
- Features a cupped, serrated design to improve grip and load distribution
- Made from heavy spring steel, designed for durability and resistance to deformation
- Suitable for use with 3/8-inch bolts and fasteners in threaded assemblies
* Estimated stock levels as of Wed, May 13, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
The Rotary Cupped Serrated Washer 3/8-Inch is a hardware accessory designed to improve fastening security where a bolt or nut meets a surface. Its cupped shape helps distribute load while the serrated face bites into material to reduce loosening from vibration, making it a practical choice for applications that need a firmer hold. Use it under bolt heads or nuts on metalwork, machinery, automotive assemblies, gates, or outdoor fixtures where movement and vibration are concerns. The compact 3/8-inch size fits common fasteners, and the serrations help maintain tension over time without relying solely on locknuts or thread-locking compounds. Lightweight and simple to install, this washer offers a small but important upgrade to everyday fastening tasks for hobbyists and tradespeople alike.
Specifications
General
| Fits Brand | No models information |
|---|---|
| Replacement For | No replacement part information |
| Type | Cupped Serrated Washer |
